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<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
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                  <a href="#GimpLayer.object-hierarchy" class="shortcut">Object Hierarchy</a></span>
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<div class="refentry">
<a name="GimpLayer"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="GimpLayer.top_of_page"></a>gimplayer</span></h2>
<p>gimplayer — Operations on a single layer.</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="GimpLayer.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_proto_type">
<col class="functions_proto_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-get-by-id" title="gimp_layer_get_by_id ()">gimp_layer_get_by_id</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-new" title="gimp_layer_new ()">gimp_layer_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-new-from-drawable" title="gimp_layer_new_from_drawable ()">gimp_layer_new_from_drawable</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-new-from-visible" title="gimp_layer_new_from_visible ()">gimp_layer_new_from_visible</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-new-from-pixbuf" title="gimp_layer_new_from_pixbuf ()">gimp_layer_new_from_pixbuf</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-new-from-surface" title="gimp_layer_new_from_surface ()">gimp_layer_new_from_surface</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-group-new" title="gimp_layer_group_new ()">gimp_layer_group_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-copy" title="gimp_layer_copy ()">gimp_layer_copy</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-scale" title="gimp_layer_scale ()">gimp_layer_scale</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-resize" title="gimp_layer_resize ()">gimp_layer_resize</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-resize-to-image-size" title="gimp_layer_resize_to_image_size ()">gimp_layer_resize_to_image_size</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-add-alpha" title="gimp_layer_add_alpha ()">gimp_layer_add_alpha</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-flatten" title="gimp_layer_flatten ()">gimp_layer_flatten</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-set-offsets" title="gimp_layer_set_offsets ()">gimp_layer_set_offsets</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GimpLayerMask.html" title="GimpLayerMask"><span class="returnvalue">GimpLayerMask</span></a> *
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-create-mask" title="gimp_layer_create_mask ()">gimp_layer_create_mask</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-from-mask" title="gimp_layer_from_mask ()">gimp_layer_from_mask</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GimpLayerMask.html" title="GimpLayerMask"><span class="returnvalue">GimpLayerMask</span></a> *
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-get-mask" title="gimp_layer_get_mask ()">gimp_layer_get_mask</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-add-mask" title="gimp_layer_add_mask ()">gimp_layer_add_mask</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-remove-mask" title="gimp_layer_remove_mask ()">gimp_layer_remove_mask</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-is-floating-sel" title="gimp_layer_is_floating_sel ()">gimp_layer_is_floating_sel</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-get-lock-alpha" title="gimp_layer_get_lock_alpha ()">gimp_layer_get_lock_alpha</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-set-lock-alpha" title="gimp_layer_set_lock_alpha ()">gimp_layer_set_lock_alpha</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-get-apply-mask" title="gimp_layer_get_apply_mask ()">gimp_layer_get_apply_mask</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-set-apply-mask" title="gimp_layer_set_apply_mask ()">gimp_layer_set_apply_mask</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-get-show-mask" title="gimp_layer_get_show_mask ()">gimp_layer_get_show_mask</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-set-show-mask" title="gimp_layer_set_show_mask ()">gimp_layer_set_show_mask</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-get-edit-mask" title="gimp_layer_get_edit_mask ()">gimp_layer_get_edit_mask</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-set-edit-mask" title="gimp_layer_set_edit_mask ()">gimp_layer_set_edit_mask</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gdouble</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-get-opacity" title="gimp_layer_get_opacity ()">gimp_layer_get_opacity</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-set-opacity" title="gimp_layer_set_opacity ()">gimp_layer_set_opacity</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="libgimp3-gimpenums.html#GimpLayerMode" title="enum GimpLayerMode"><span class="returnvalue">GimpLayerMode</span></a>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-get-mode" title="gimp_layer_get_mode ()">gimp_layer_get_mode</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-set-mode" title="gimp_layer_set_mode ()">gimp_layer_set_mode</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="libgimp3-gimpenums.html#GimpLayerColorSpace" title="enum GimpLayerColorSpace"><span class="returnvalue">GimpLayerColorSpace</span></a>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-get-blend-space" title="gimp_layer_get_blend_space ()">gimp_layer_get_blend_space</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-set-blend-space" title="gimp_layer_set_blend_space ()">gimp_layer_set_blend_space</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="libgimp3-gimpenums.html#GimpLayerColorSpace" title="enum GimpLayerColorSpace"><span class="returnvalue">GimpLayerColorSpace</span></a>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-get-composite-space" title="gimp_layer_get_composite_space ()">gimp_layer_get_composite_space</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-set-composite-space" title="gimp_layer_set_composite_space ()">gimp_layer_set_composite_space</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="libgimp3-gimpenums.html#GimpLayerCompositeMode" title="enum GimpLayerCompositeMode"><span class="returnvalue">GimpLayerCompositeMode</span></a>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-get-composite-mode" title="gimp_layer_get_composite_mode ()">gimp_layer_get_composite_mode</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">gboolean</span>
</td>
<td class="function_name">
<a class="link" href="GimpLayer.html#gimp-layer-set-composite-mode" title="gimp_layer_set_composite_mode ()">gimp_layer_set_composite_mode</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GimpLayer.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    GObject
    <span class="lineart">╰──</span> <a class="link" href="GimpItem.html" title="gimpitem">GimpItem</a>
        <span class="lineart">╰──</span> <a class="link" href="GimpDrawable.html" title="gimpdrawable">GimpDrawable</a>
            <span class="lineart">╰──</span> GimpLayer
</pre>
</div>
<div class="refsect1">
<a name="GimpLayer.description"></a><h2>Description</h2>
<p>Operations on a single layer.</p>
</div>
<div class="refsect1">
<a name="GimpLayer.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gimp-layer-get-by-id"></a><h3>gimp_layer_get_by_id ()</h3>
<pre class="programlisting"><a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
gimp_layer_get_by_id (<em class="parameter"><code><span class="type">gint32</span> layer_id</code></em>);</pre>
<p>Returns a <a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> representing <em class="parameter"><code>layer_id</code></em>
. This function calls
<a class="link" href="GimpItem.html#gimp-item-get-by-id" title="gimp_item_get_by_id ()"><code class="function">gimp_item_get_by_id()</code></a> and returns the item if it is layer or <code class="literal">NULL</code>
otherwise.</p>
<div class="refsect3">
<a name="gimp-layer-get-by-id.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer_id</p></td>
<td class="parameter_description"><p>The layer id.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-get-by-id.returns"></a><h4>Returns</h4>
<p>a <a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> for <em class="parameter"><code>layer_id</code></em>
or
<code class="literal">NULL</code> if <em class="parameter"><code>layer_id</code></em>
does not represent a valid layer. The
object belongs to libgimp and you must not modify or unref
it. </p>
<p><span class="annotation">[<acronym title="NULL may be passed as the value in, out, in-out; or as a return value."><span class="acronym">nullable</span></acronym>][<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-3-0.html#api-index-3.0">3.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-new"></a><h3>gimp_layer_new ()</h3>
<pre class="programlisting"><a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
gimp_layer_new (<em class="parameter"><code><a class="link" href="GimpImage.html" title="gimpimage"><span class="type">GimpImage</span></a> *image</code></em>,
                <em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>,
                <em class="parameter"><code><span class="type">gint</span> width</code></em>,
                <em class="parameter"><code><span class="type">gint</span> height</code></em>,
                <em class="parameter"><code><a href="../html/libgimpbase3-gimpbaseenums.html#GimpImageType"><span class="type">GimpImageType</span></a> type</code></em>,
                <em class="parameter"><code><span class="type">gdouble</span> opacity</code></em>,
                <em class="parameter"><code><a class="link" href="libgimp3-gimpenums.html#GimpLayerMode" title="enum GimpLayerMode"><span class="type">GimpLayerMode</span></a> mode</code></em>);</pre>
<p>Create a new layer.</p>
<p>This procedure creates a new layer with the specified width, height,
and type. Name, opacity, and mode are also supplied parameters. The
new layer still needs to be added to the image, as this is not
automatic. Add the new layer with the <a class="link" href="GimpImage.html#gimp-image-insert-layer" title="gimp_image_insert_layer ()"><code class="function">gimp_image_insert_layer()</code></a>
command. Other attributes such as layer mask modes, and offsets
should be set with explicit procedure calls.</p>
<div class="refsect3">
<a name="gimp-layer-new.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>image</p></td>
<td class="parameter_description"><p>The image to which to add the layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>The layer name.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>width</p></td>
<td class="parameter_description"><p>The layer width.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>height</p></td>
<td class="parameter_description"><p>The layer height.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>type</p></td>
<td class="parameter_description"><p>The layer type.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>opacity</p></td>
<td class="parameter_description"><p>The layer opacity.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>mode</p></td>
<td class="parameter_description"><p>The layer combination mode.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-new.returns"></a><h4>Returns</h4>
<p>The newly created layer.
The object belongs to libgimp and you should not free it. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-3-0.html#api-index-3.0">3.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-new-from-drawable"></a><h3>gimp_layer_new_from_drawable ()</h3>
<pre class="programlisting"><a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
gimp_layer_new_from_drawable (<em class="parameter"><code><a class="link" href="GimpDrawable.html" title="gimpdrawable"><span class="type">GimpDrawable</span></a> *drawable</code></em>,
                              <em class="parameter"><code><a class="link" href="GimpImage.html" title="gimpimage"><span class="type">GimpImage</span></a> *dest_image</code></em>);</pre>
<p>Create a new layer by copying an existing drawable.</p>
<p>This procedure creates a new layer as a copy of the specified
drawable. The new layer still needs to be added to the image, as
this is not automatic. Add the new layer with the
<a class="link" href="GimpImage.html#gimp-image-insert-layer" title="gimp_image_insert_layer ()"><code class="function">gimp_image_insert_layer()</code></a> command. Other attributes such as layer
mask modes, and offsets should be set with explicit procedure calls.</p>
<div class="refsect3">
<a name="gimp-layer-new-from-drawable.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>drawable</p></td>
<td class="parameter_description"><p>The source drawable from where the new layer is copied.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>dest_image</p></td>
<td class="parameter_description"><p>The destination image to which to add the layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-new-from-drawable.returns"></a><h4>Returns</h4>
<p>The newly copied layer. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-new-from-visible"></a><h3>gimp_layer_new_from_visible ()</h3>
<pre class="programlisting"><a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
gimp_layer_new_from_visible (<em class="parameter"><code><a class="link" href="GimpImage.html" title="gimpimage"><span class="type">GimpImage</span></a> *image</code></em>,
                             <em class="parameter"><code><a class="link" href="GimpImage.html" title="gimpimage"><span class="type">GimpImage</span></a> *dest_image</code></em>,
                             <em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>);</pre>
<p>Create a new layer from what is visible in an image.</p>
<p>This procedure creates a new layer from what is visible in the given
image. The new layer still needs to be added to the destination
image, as this is not automatic. Add the new layer with the
<a class="link" href="GimpImage.html#gimp-image-insert-layer" title="gimp_image_insert_layer ()"><code class="function">gimp_image_insert_layer()</code></a> command. Other attributes such as layer
mask modes, and offsets should be set with explicit procedure calls.</p>
<div class="refsect3">
<a name="gimp-layer-new-from-visible.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>image</p></td>
<td class="parameter_description"><p>The source image from where the content is copied.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>dest_image</p></td>
<td class="parameter_description"><p>The destination image to which to add the layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>The layer name.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-new-from-visible.returns"></a><h4>Returns</h4>
<p>The newly created layer. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-6.html#api-index-2.6">2.6</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-new-from-pixbuf"></a><h3>gimp_layer_new_from_pixbuf ()</h3>
<pre class="programlisting"><a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
gimp_layer_new_from_pixbuf (<em class="parameter"><code><a class="link" href="GimpImage.html" title="gimpimage"><span class="type">GimpImage</span></a> *image</code></em>,
                            <em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>,
                            <em class="parameter"><code><span class="type">GdkPixbuf</span> *pixbuf</code></em>,
                            <em class="parameter"><code><span class="type">gdouble</span> opacity</code></em>,
                            <em class="parameter"><code><a class="link" href="libgimp3-gimpenums.html#GimpLayerMode" title="enum GimpLayerMode"><span class="type">GimpLayerMode</span></a> mode</code></em>,
                            <em class="parameter"><code><span class="type">gdouble</span> progress_start</code></em>,
                            <em class="parameter"><code><span class="type">gdouble</span> progress_end</code></em>);</pre>
<p>Create a new layer from a <code class="literal">GdkPixbuf</code>.</p>
<p>This procedure creates a new layer from the given <code class="literal">GdkPixbuf</code>.  The
image has to be an RGB image and just like with <a class="link" href="GimpLayer.html#gimp-layer-new" title="gimp_layer_new ()"><code class="function">gimp_layer_new()</code></a>
you will still need to add the layer to it.</p>
<p>If you pass <em class="parameter"><code>progress_end</code></em>
 &gt; <em class="parameter"><code>progress_start</code></em>
 to this function,
<a class="link" href="libgimp3-gimpprogress.html#gimp-progress-update" title="gimp_progress_update ()"><code class="function">gimp_progress_update()</code></a> will be called for. You have to call
<a class="link" href="libgimp3-gimpprogress.html#gimp-progress-init" title="gimp_progress_init ()"><code class="function">gimp_progress_init()</code></a> beforehand then.</p>
<div class="refsect3">
<a name="gimp-layer-new-from-pixbuf.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>image</p></td>
<td class="parameter_description"><p>The RGB image to which to add the layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>The layer name.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>pixbuf</p></td>
<td class="parameter_description"><p>A GdkPixbuf.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>opacity</p></td>
<td class="parameter_description"><p>The layer opacity.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>mode</p></td>
<td class="parameter_description"><p>The layer combination mode.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>progress_start</p></td>
<td class="parameter_description"><p>start of progress</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>progress_end</p></td>
<td class="parameter_description"><p>end of progress</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-new-from-pixbuf.returns"></a><h4>Returns</h4>
<p>The newly created layer.
The object belongs to libgimp and you should not free it. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-2.html#api-index-2.2">2.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-new-from-surface"></a><h3>gimp_layer_new_from_surface ()</h3>
<pre class="programlisting"><a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
gimp_layer_new_from_surface (<em class="parameter"><code><a class="link" href="GimpImage.html" title="gimpimage"><span class="type">GimpImage</span></a> *image</code></em>,
                             <em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>,
                             <em class="parameter"><code><span class="type">cairo_surface_t</span> *surface</code></em>,
                             <em class="parameter"><code><span class="type">gdouble</span> progress_start</code></em>,
                             <em class="parameter"><code><span class="type">gdouble</span> progress_end</code></em>);</pre>
<p>Create a new layer from a <span class="type">cairo_surface_t</span>.</p>
<p>This procedure creates a new layer from the given
<span class="type">cairo_surface_t</span>. The image has to be an RGB image and just like
with <a class="link" href="GimpLayer.html#gimp-layer-new" title="gimp_layer_new ()"><code class="function">gimp_layer_new()</code></a> you will still need to add the layer to it.</p>
<p>If you pass <em class="parameter"><code>progress_end</code></em>
 &gt; <em class="parameter"><code>progress_start</code></em>
 to this function,
<a class="link" href="libgimp3-gimpprogress.html#gimp-progress-update" title="gimp_progress_update ()"><code class="function">gimp_progress_update()</code></a> will be called for. You have to call
<a class="link" href="libgimp3-gimpprogress.html#gimp-progress-init" title="gimp_progress_init ()"><code class="function">gimp_progress_init()</code></a> beforehand then.</p>
<div class="refsect3">
<a name="gimp-layer-new-from-surface.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>image</p></td>
<td class="parameter_description"><p>The RGB image to which to add the layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>name</p></td>
<td class="parameter_description"><p>The layer name.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>surface</p></td>
<td class="parameter_description"><p>A Cairo image surface.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>progress_start</p></td>
<td class="parameter_description"><p>start of progress</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>progress_end</p></td>
<td class="parameter_description"><p>end of progress</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-new-from-surface.returns"></a><h4>Returns</h4>
<p>The newly created layer.
The object belongs to libgimp and you should not free it. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-8.html#api-index-2.8">2.8</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-group-new"></a><h3>gimp_layer_group_new ()</h3>
<pre class="programlisting"><a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
gimp_layer_group_new (<em class="parameter"><code><a class="link" href="GimpImage.html" title="gimpimage"><span class="type">GimpImage</span></a> *image</code></em>);</pre>
<p>Create a new layer group.</p>
<p>This procedure creates a new layer group. Attributes such as layer
mode and opacity should be set with explicit procedure calls. Add
the new layer group (which is a kind of layer) with the
<a class="link" href="GimpImage.html#gimp-image-insert-layer" title="gimp_image_insert_layer ()"><code class="function">gimp_image_insert_layer()</code></a> command.
Other procedures useful with layer groups:
<a class="link" href="GimpImage.html#gimp-image-reorder-item" title="gimp_image_reorder_item ()"><code class="function">gimp_image_reorder_item()</code></a>, <a class="link" href="GimpItem.html#gimp-item-get-parent" title="gimp_item_get_parent ()"><code class="function">gimp_item_get_parent()</code></a>,
<a class="link" href="GimpItem.html#gimp-item-get-children" title="gimp_item_get_children ()"><code class="function">gimp_item_get_children()</code></a>, <a class="link" href="GimpItem.html#gimp-item-is-group" title="gimp_item_is_group ()"><code class="function">gimp_item_is_group()</code></a>.</p>
<div class="refsect3">
<a name="gimp-layer-group-new.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>image</p></td>
<td class="parameter_description"><p>The image to which to add the layer group.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-group-new.returns"></a><h4>Returns</h4>
<p>The newly created layer group. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-8.html#api-index-2.8">2.8</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-copy"></a><h3>gimp_layer_copy ()</h3>
<pre class="programlisting"><a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
gimp_layer_copy (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>);</pre>
<p>Copy a layer.</p>
<p>This procedure copies the specified layer and returns the copy. The
newly copied layer is for use within the original layer's image. It
should not be subsequently added to any other image.</p>
<div class="refsect3">
<a name="gimp-layer-copy.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer to copy.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-copy.returns"></a><h4>Returns</h4>
<p>The newly copied layer.
The object belongs to libgimp and you should not free it. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-3-0.html#api-index-3.0">3.0</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-scale"></a><h3>gimp_layer_scale ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_scale (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>,
                  <em class="parameter"><code><span class="type">gint</span> new_width</code></em>,
                  <em class="parameter"><code><span class="type">gint</span> new_height</code></em>,
                  <em class="parameter"><code><span class="type">gboolean</span> local_origin</code></em>);</pre>
<p>Scale the layer using the default interpolation method.</p>
<p>This procedure scales the layer so that its new width and height are
equal to the supplied parameters. The 'local-origin' parameter
specifies whether to scale from the center of the layer, or from the
image origin. This operation only works if the layer has been added
to an image. The interpolation method used can be set with
<a class="link" href="libgimp3-gimpcontext.html#gimp-context-set-interpolation" title="gimp_context_set_interpolation ()"><code class="function">gimp_context_set_interpolation()</code></a>.</p>
<div class="refsect3">
<a name="gimp-layer-scale.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>new_width</p></td>
<td class="parameter_description"><p>New layer width.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>new_height</p></td>
<td class="parameter_description"><p>New layer height.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>local_origin</p></td>
<td class="parameter_description"><p>Use a local origin (as opposed to the image origin).</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-scale.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-resize"></a><h3>gimp_layer_resize ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_resize (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>,
                   <em class="parameter"><code><span class="type">gint</span> new_width</code></em>,
                   <em class="parameter"><code><span class="type">gint</span> new_height</code></em>,
                   <em class="parameter"><code><span class="type">gint</span> offx</code></em>,
                   <em class="parameter"><code><span class="type">gint</span> offy</code></em>);</pre>
<p>Resize the layer to the specified extents.</p>
<p>This procedure resizes the layer so that its new width and height
are equal to the supplied parameters. Offsets are also provided
which describe the position of the previous layer's content. This
operation only works if the layer has been added to an image.</p>
<div class="refsect3">
<a name="gimp-layer-resize.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>new_width</p></td>
<td class="parameter_description"><p>New layer width.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>new_height</p></td>
<td class="parameter_description"><p>New layer height.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>offx</p></td>
<td class="parameter_description"><p>x offset between upper left corner of old and new layers: (old - new).</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>offy</p></td>
<td class="parameter_description"><p>y offset between upper left corner of old and new layers: (old - new).</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-resize.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-resize-to-image-size"></a><h3>gimp_layer_resize_to_image_size ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_resize_to_image_size (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>);</pre>
<p>Resize a layer to the image size.</p>
<p>This procedure resizes the layer so that it's new width and height
are equal to the width and height of its image container.</p>
<div class="refsect3">
<a name="gimp-layer-resize-to-image-size.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer to resize.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-resize-to-image-size.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-add-alpha"></a><h3>gimp_layer_add_alpha ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_add_alpha (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>);</pre>
<p>Add an alpha channel to the layer if it doesn't already have one.</p>
<p>This procedure adds an additional component to the specified layer
if it does not already possess an alpha channel. An alpha channel
makes it possible to clear and erase to transparency, instead of the
background color. This transforms layers of type RGB to RGBA, GRAY
to GRAYA, and INDEXED to INDEXEDA.</p>
<div class="refsect3">
<a name="gimp-layer-add-alpha.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-add-alpha.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-flatten"></a><h3>gimp_layer_flatten ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_flatten (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>);</pre>
<p>Remove the alpha channel from the layer if it has one.</p>
<p>This procedure removes the alpha channel from a layer, blending all
(partially) transparent pixels in the layer against the background
color. This transforms layers of type RGBA to RGB, GRAYA to GRAY,
and INDEXEDA to INDEXED.</p>
<div class="refsect3">
<a name="gimp-layer-flatten.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-flatten.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-4.html#api-index-2.4">2.4</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-set-offsets"></a><h3>gimp_layer_set_offsets ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_set_offsets (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>,
                        <em class="parameter"><code><span class="type">gint</span> offx</code></em>,
                        <em class="parameter"><code><span class="type">gint</span> offy</code></em>);</pre>
<p>Set the layer offsets.</p>
<p>This procedure sets the offsets for the specified layer. The offsets
are relative to the image origin and can be any values. This
operation is valid only on layers which have been added to an image.</p>
<div class="refsect3">
<a name="gimp-layer-set-offsets.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>offx</p></td>
<td class="parameter_description"><p>Offset in x direction.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>offy</p></td>
<td class="parameter_description"><p>Offset in y direction.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-set-offsets.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-create-mask"></a><h3>gimp_layer_create_mask ()</h3>
<pre class="programlisting"><a class="link" href="GimpLayerMask.html" title="GimpLayerMask"><span class="returnvalue">GimpLayerMask</span></a> *
gimp_layer_create_mask (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>,
                        <em class="parameter"><code><a href="../html/libgimpbase3-gimpbaseenums.html#GimpAddMaskType"><span class="type">GimpAddMaskType</span></a> mask_type</code></em>);</pre>
<p>Create a layer mask for the specified layer.</p>
<p>This procedure creates a layer mask for the specified layer.
Layer masks serve as an additional alpha channel for a layer.
Different types of masks are allowed for initialisation:</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>white mask (leaves the layer fully visible);</p></li>
<li class="listitem"><p>black mask (gives the layer complete transparency);</p></li>
<li class="listitem"><p>the layer's alpha channel (either a copy, or a transfer, which
leaves the layer fully visible, but which may be more useful than a
white mask);</p></li>
<li class="listitem"><p>the current selection;</p></li>
<li class="listitem"><p>a grayscale copy of the layer;</p></li>
<li class="listitem"><p>or a copy of the active channel.</p></li>
</ul></div>
<p>The layer mask still needs to be added to the layer. This can be
done with a call to <a class="link" href="GimpLayer.html#gimp-layer-add-mask" title="gimp_layer_add_mask ()"><code class="function">gimp_layer_add_mask()</code></a>.</p>
<p>gimp_layer_create_mask() will fail if there are no active channels
on the image, when called with 'ADD-CHANNEL-MASK'. It will return a
black mask when called with 'ADD-ALPHA-MASK' or
'ADD-ALPHA-TRANSFER-MASK' on a layer with no alpha channels, or with
'ADD-SELECTION-MASK' when there is no selection on the image.</p>
<div class="refsect3">
<a name="gimp-layer-create-mask.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer to which to add the mask.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>mask_type</p></td>
<td class="parameter_description"><p>The type of mask.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-create-mask.returns"></a><h4>Returns</h4>
<p>The newly created mask. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-from-mask"></a><h3>gimp_layer_from_mask ()</h3>
<pre class="programlisting"><a class="link" href="GimpLayer.html" title="gimplayer"><span class="returnvalue">GimpLayer</span></a> *
gimp_layer_from_mask (<em class="parameter"><code><a class="link" href="GimpLayerMask.html" title="GimpLayerMask"><span class="type">GimpLayerMask</span></a> *mask</code></em>);</pre>
<p>Get the specified mask's layer.</p>
<p>This procedure returns the specified mask's layer , or -1 if none
exists.</p>
<div class="refsect3">
<a name="gimp-layer-from-mask.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>mask</p></td>
<td class="parameter_description"><p>Mask for which to return the layer.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-from-mask.returns"></a><h4>Returns</h4>
<p>The mask's layer. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-2.html#api-index-2.2">2.2</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-get-mask"></a><h3>gimp_layer_get_mask ()</h3>
<pre class="programlisting"><a class="link" href="GimpLayerMask.html" title="GimpLayerMask"><span class="returnvalue">GimpLayerMask</span></a> *
gimp_layer_get_mask (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>);</pre>
<p>Get the specified layer's mask if it exists.</p>
<p>This procedure returns the specified layer's mask, or -1 if none
exists.</p>
<div class="refsect3">
<a name="gimp-layer-get-mask.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-get-mask.returns"></a><h4>Returns</h4>
<p>The layer mask. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-add-mask"></a><h3>gimp_layer_add_mask ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_add_mask (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>,
                     <em class="parameter"><code><a class="link" href="GimpLayerMask.html" title="GimpLayerMask"><span class="type">GimpLayerMask</span></a> *mask</code></em>);</pre>
<p>Add a layer mask to the specified layer.</p>
<p>This procedure adds a layer mask to the specified layer. Layer masks
serve as an additional alpha channel for a layer. This procedure
will fail if a number of prerequisites aren't met. The layer cannot
already have a layer mask. The specified mask must exist and have
the same dimensions as the layer. The layer must have been created
for use with the specified image and the mask must have been created
with the procedure 'gimp-layer-create-mask'.</p>
<div class="refsect3">
<a name="gimp-layer-add-mask.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer to receive the mask.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>mask</p></td>
<td class="parameter_description"><p>The mask to add to the layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-add-mask.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-remove-mask"></a><h3>gimp_layer_remove_mask ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_remove_mask (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>,
                        <em class="parameter"><code><a href="../html/libgimpbase3-gimpbaseenums.html#GimpMaskApplyMode"><span class="type">GimpMaskApplyMode</span></a> mode</code></em>);</pre>
<p>Remove the specified layer mask from the layer.</p>
<p>This procedure removes the specified layer mask from the layer. If
the mask doesn't exist, an error is returned.</p>
<div class="refsect3">
<a name="gimp-layer-remove-mask.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer from which to remove mask.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>mode</p></td>
<td class="parameter_description"><p>Removal mode.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-remove-mask.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-is-floating-sel"></a><h3>gimp_layer_is_floating_sel ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_is_floating_sel (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>);</pre>
<p>Is the specified layer a floating selection?</p>
<p>This procedure returns whether the layer is a floating selection.
Floating selections are special cases of layers which are attached
to a specific drawable.</p>
<div class="refsect3">
<a name="gimp-layer-is-floating-sel.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-is-floating-sel.returns"></a><h4>Returns</h4>
<p> TRUE if the layer is a floating selection.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-get-lock-alpha"></a><h3>gimp_layer_get_lock_alpha ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_get_lock_alpha (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>);</pre>
<p>Get the lock alpha channel setting of the specified layer.</p>
<p>This procedure returns the specified layer's lock alpha channel
setting.</p>
<div class="refsect3">
<a name="gimp-layer-get-lock-alpha.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-get-lock-alpha.returns"></a><h4>Returns</h4>
<p> The layer's lock alpha channel setting.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-set-lock-alpha"></a><h3>gimp_layer_set_lock_alpha ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_set_lock_alpha (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>,
                           <em class="parameter"><code><span class="type">gboolean</span> lock_alpha</code></em>);</pre>
<p>Set the lock alpha channel setting of the specified layer.</p>
<p>This procedure sets the specified layer's lock alpha channel
setting.</p>
<div class="refsect3">
<a name="gimp-layer-set-lock-alpha.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>lock_alpha</p></td>
<td class="parameter_description"><p>The new layer's lock alpha channel setting.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-set-lock-alpha.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-get-apply-mask"></a><h3>gimp_layer_get_apply_mask ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_get_apply_mask (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>);</pre>
<p>Get the apply mask setting of the specified layer.</p>
<p>This procedure returns the specified layer's apply mask setting. If
the value is TRUE, then the layer mask for this layer is currently
being composited with the layer's alpha channel.</p>
<div class="refsect3">
<a name="gimp-layer-get-apply-mask.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-get-apply-mask.returns"></a><h4>Returns</h4>
<p> The layer's apply mask setting.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-set-apply-mask"></a><h3>gimp_layer_set_apply_mask ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_set_apply_mask (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>,
                           <em class="parameter"><code><span class="type">gboolean</span> apply_mask</code></em>);</pre>
<p>Set the apply mask setting of the specified layer.</p>
<p>This procedure sets the specified layer's apply mask setting. This
controls whether the layer's mask is currently affecting the alpha
channel. If there is no layer mask, this function will return an
error.</p>
<div class="refsect3">
<a name="gimp-layer-set-apply-mask.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>apply_mask</p></td>
<td class="parameter_description"><p>The new layer's apply mask setting.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-set-apply-mask.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-get-show-mask"></a><h3>gimp_layer_get_show_mask ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_get_show_mask (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>);</pre>
<p>Get the show mask setting of the specified layer.</p>
<p>This procedure returns the specified layer's show mask setting. This
controls whether the layer or its mask is visible. TRUE indicates
that the mask should be visible. If the layer has no mask, then this
function returns an error.</p>
<div class="refsect3">
<a name="gimp-layer-get-show-mask.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-get-show-mask.returns"></a><h4>Returns</h4>
<p> The layer's show mask setting.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-set-show-mask"></a><h3>gimp_layer_set_show_mask ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_set_show_mask (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>,
                          <em class="parameter"><code><span class="type">gboolean</span> show_mask</code></em>);</pre>
<p>Set the show mask setting of the specified layer.</p>
<p>This procedure sets the specified layer's show mask setting. This
controls whether the layer or its mask is visible. TRUE indicates
that the mask should be visible. If there is no layer mask, this
function will return an error.</p>
<div class="refsect3">
<a name="gimp-layer-set-show-mask.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>show_mask</p></td>
<td class="parameter_description"><p>The new layer's show mask setting.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-set-show-mask.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-get-edit-mask"></a><h3>gimp_layer_get_edit_mask ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_get_edit_mask (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>);</pre>
<p>Get the edit mask setting of the specified layer.</p>
<p>This procedure returns the specified layer's edit mask setting. If
the value is TRUE, then the layer mask for this layer is currently
active, and not the layer.</p>
<div class="refsect3">
<a name="gimp-layer-get-edit-mask.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-get-edit-mask.returns"></a><h4>Returns</h4>
<p> The layer's edit mask setting.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-set-edit-mask"></a><h3>gimp_layer_set_edit_mask ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_set_edit_mask (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>,
                          <em class="parameter"><code><span class="type">gboolean</span> edit_mask</code></em>);</pre>
<p>Set the edit mask setting of the specified layer.</p>
<p>This procedure sets the specified layer's edit mask setting. This
controls whether the layer or it's mask is currently active for
editing. If the specified layer has no layer mask, then this
procedure will return an error.</p>
<div class="refsect3">
<a name="gimp-layer-set-edit-mask.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>edit_mask</p></td>
<td class="parameter_description"><p>The new layer's edit mask setting.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-set-edit-mask.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-get-opacity"></a><h3>gimp_layer_get_opacity ()</h3>
<pre class="programlisting"><span class="returnvalue">gdouble</span>
gimp_layer_get_opacity (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>);</pre>
<p>Get the opacity of the specified layer.</p>
<p>This procedure returns the specified layer's opacity.</p>
<div class="refsect3">
<a name="gimp-layer-get-opacity.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-get-opacity.returns"></a><h4>Returns</h4>
<p> The layer opacity.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-set-opacity"></a><h3>gimp_layer_set_opacity ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_set_opacity (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>,
                        <em class="parameter"><code><span class="type">gdouble</span> opacity</code></em>);</pre>
<p>Set the opacity of the specified layer.</p>
<p>This procedure sets the specified layer's opacity.</p>
<div class="refsect3">
<a name="gimp-layer-set-opacity.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>opacity</p></td>
<td class="parameter_description"><p>The new layer opacity.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-set-opacity.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-get-mode"></a><h3>gimp_layer_get_mode ()</h3>
<pre class="programlisting"><a class="link" href="libgimp3-gimpenums.html#GimpLayerMode" title="enum GimpLayerMode"><span class="returnvalue">GimpLayerMode</span></a>
gimp_layer_get_mode (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>);</pre>
<p>Get the combination mode of the specified layer.</p>
<p>This procedure returns the specified layer's combination mode.</p>
<div class="refsect3">
<a name="gimp-layer-get-mode.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-get-mode.returns"></a><h4>Returns</h4>
<p> The layer combination mode.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-set-mode"></a><h3>gimp_layer_set_mode ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_set_mode (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>,
                     <em class="parameter"><code><a class="link" href="libgimp3-gimpenums.html#GimpLayerMode" title="enum GimpLayerMode"><span class="type">GimpLayerMode</span></a> mode</code></em>);</pre>
<p>Set the combination mode of the specified layer.</p>
<p>This procedure sets the specified layer's combination mode.</p>
<div class="refsect3">
<a name="gimp-layer-set-mode.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>mode</p></td>
<td class="parameter_description"><p>The new layer combination mode.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-set-mode.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-get-blend-space"></a><h3>gimp_layer_get_blend_space ()</h3>
<pre class="programlisting"><a class="link" href="libgimp3-gimpenums.html#GimpLayerColorSpace" title="enum GimpLayerColorSpace"><span class="returnvalue">GimpLayerColorSpace</span></a>
gimp_layer_get_blend_space (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>);</pre>
<p>Get the blend space of the specified layer.</p>
<p>This procedure returns the specified layer's blend space.</p>
<div class="refsect3">
<a name="gimp-layer-get-blend-space.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-get-blend-space.returns"></a><h4>Returns</h4>
<p> The layer blend space.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-10.html#api-index-2.10">2.10</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-set-blend-space"></a><h3>gimp_layer_set_blend_space ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_set_blend_space (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>,
                            <em class="parameter"><code><a class="link" href="libgimp3-gimpenums.html#GimpLayerColorSpace" title="enum GimpLayerColorSpace"><span class="type">GimpLayerColorSpace</span></a> blend_space</code></em>);</pre>
<p>Set the blend space of the specified layer.</p>
<p>This procedure sets the specified layer's blend space.</p>
<div class="refsect3">
<a name="gimp-layer-set-blend-space.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>blend_space</p></td>
<td class="parameter_description"><p>The new layer blend space.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-set-blend-space.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-10.html#api-index-2.10">2.10</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-get-composite-space"></a><h3>gimp_layer_get_composite_space ()</h3>
<pre class="programlisting"><a class="link" href="libgimp3-gimpenums.html#GimpLayerColorSpace" title="enum GimpLayerColorSpace"><span class="returnvalue">GimpLayerColorSpace</span></a>
gimp_layer_get_composite_space (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>);</pre>
<p>Get the composite space of the specified layer.</p>
<p>This procedure returns the specified layer's composite space.</p>
<div class="refsect3">
<a name="gimp-layer-get-composite-space.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-get-composite-space.returns"></a><h4>Returns</h4>
<p> The layer composite space.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-10.html#api-index-2.10">2.10</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-set-composite-space"></a><h3>gimp_layer_set_composite_space ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_set_composite_space (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>,
                                <em class="parameter"><code><a class="link" href="libgimp3-gimpenums.html#GimpLayerColorSpace" title="enum GimpLayerColorSpace"><span class="type">GimpLayerColorSpace</span></a> composite_space</code></em>);</pre>
<p>Set the composite space of the specified layer.</p>
<p>This procedure sets the specified layer's composite space.</p>
<div class="refsect3">
<a name="gimp-layer-set-composite-space.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>composite_space</p></td>
<td class="parameter_description"><p>The new layer composite space.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-set-composite-space.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-10.html#api-index-2.10">2.10</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-get-composite-mode"></a><h3>gimp_layer_get_composite_mode ()</h3>
<pre class="programlisting"><a class="link" href="libgimp3-gimpenums.html#GimpLayerCompositeMode" title="enum GimpLayerCompositeMode"><span class="returnvalue">GimpLayerCompositeMode</span></a>
gimp_layer_get_composite_mode (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>);</pre>
<p>Get the composite mode of the specified layer.</p>
<p>This procedure returns the specified layer's composite mode.</p>
<div class="refsect3">
<a name="gimp-layer-get-composite-mode.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-get-composite-mode.returns"></a><h4>Returns</h4>
<p> The layer composite mode.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-10.html#api-index-2.10">2.10</a></p>
</div>
<hr>
<div class="refsect2">
<a name="gimp-layer-set-composite-mode"></a><h3>gimp_layer_set_composite_mode ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>
gimp_layer_set_composite_mode (<em class="parameter"><code><a class="link" href="GimpLayer.html" title="gimplayer"><span class="type">GimpLayer</span></a> *layer</code></em>,
                               <em class="parameter"><code><a class="link" href="libgimp3-gimpenums.html#GimpLayerCompositeMode" title="enum GimpLayerCompositeMode"><span class="type">GimpLayerCompositeMode</span></a> composite_mode</code></em>);</pre>
<p>Set the composite mode of the specified layer.</p>
<p>This procedure sets the specified layer's composite mode.</p>
<div class="refsect3">
<a name="gimp-layer-set-composite-mode.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>layer</p></td>
<td class="parameter_description"><p>The layer.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>composite_mode</p></td>
<td class="parameter_description"><p>The new layer composite mode.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="gimp-layer-set-composite-mode.returns"></a><h4>Returns</h4>
<p> TRUE on success.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-2-10.html#api-index-2.10">2.10</a></p>
</div>
</div>
</div>
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